It's slightly tricky to comment helpfully.
I like the potential drama, but it slightly lacks a focal point and excitement: the water was obviously splashing over the rocks but you've missed it and it's just running away, the sky looks like it should/could be really stormy & menacing but instead is 50 shades of grey, the sun may have been bursting through but is lost in a pale patch on the horizon.
My feeling is that instead of being nicely balanced, you could drop exposure away, crank up the contrast with a gradient on the sky and some brushwork on the foreground. However there's not a great deal actually happening, and that, as much as anything, means it's not going to be astonishing. Certainly worth re-processing though.